Bonsai: refresh the UI after renaming a material

theoryshaw tested #8843 and asked for the new name to show up right
away instead of needing a manual refresh. The Object Material panel
and the scene Materials list both already re-read live IFC data on
their next draw (tool.Ifc.Operator purges those caches after every
IFC-mutating operator), so the button text was correct on the next
redraw. What was missing was the redraw itself: the material name is
a plain button label, not an RNA property Blender tracks, so nothing
told the Properties editor to repaint after the rename dialog closed.
Tag every area for redraw once the rename completes, the same pattern
used elsewhere in Bonsai for popup-triggered edits that need an
immediate repaint.

Also adds core-layer test coverage for rename_material, which had
none.

Generated with the assistance of an AI coding tool.

src/bonsai/bonsai/bim/module/material/operator.py

@@ -120,6 +120,9 @@ class RenameMaterial(bpy.types.Operator, tool.Ifc.Operator):
 
     def _execute(self, context):
         core.rename_material(tool.Ifc, tool.Material, material=tool.Ifc.get().by_id(self.material), name=self.name)
+        if screen := context.screen:
+            for area in screen.areas:
+                area.tag_redraw()
 
 
 class DisableEditingMaterial(bpy.types.Operator):

src/bonsai/test/core/test_material.py

@@ -93,6 +93,20 @@ class TestRemoveMaterialSet:
         subject.remove_material_set(ifc, material, material="material")
 
 
+class TestRenameMaterial:
+    def test_renaming_a_material(self, ifc, material):
+        ifc.run("material.edit_material", material="material", attributes={"Name": "name"}).should_be_called()
+        material.is_editing_materials().should_be_called().will_return(False)
+        subject.rename_material(ifc, material, material="material", name="name")
+
+    def test_renaming_a_material_and_reloading_imported_materials(self, ifc, material):
+        ifc.run("material.edit_material", material="material", attributes={"Name": "name"}).should_be_called()
+        material.is_editing_materials().should_be_called().will_return(True)
+        material.get_active_material_type().should_be_called().will_return("material_type")
+        material.import_material_definitions("material_type").should_be_called()
+        subject.rename_material(ifc, material, material="material", name="name")
+
+
 class TestLoadMaterials:
     def test_run(self, material):
         material.import_material_definitions("material_type").should_be_called()